It's claimed commuters using the Thameslink rail line which runs from Bedford to London may have to wait longer for improved services.
While changes have been made, including longer trains and the current redevelopment of Blackfriars and London Bridge stations, the National Audit Office is concerned progress is too slow.
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Outbreaks of rain will move south east overnight, mostly clearing tomorrow morning. In the afternoon, a mix of sunshine and showers.
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Many of our MPs have already revealed who they will be backing to become the next Prime Minister.